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  <title>注册一个函数以便在每个 tick 上执行</title>
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    <li>注册一个函数以便在每个 tick 上执行</li>
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  <div id="layout-content"><div id="function.register-tick-function" class="refentry">
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  <h1 class="refname">register_tick_function</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.0.3, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">register_tick_function</span> &mdash; <span class="dc-title">注册一个函数以便在每个 tick 上执行</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.register-tick-function-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>register_tick_function</strong></span>(<span class="methodparam"><span class="type"><a href="language.types.callable.html" class="type callable">callable</a></span> <code class="parameter">$callback</code></span>, <span class="methodparam"><span class="type"><a href="language.types.declarations.html#language.types.declarations.mixed" class="type mixed">mixed</a></span> <code class="parameter">...$args</code></span>): <span class="type">bool</span></div>

  <p class="simpara">
   注册给定的 <code class="parameter">callback</code>，以便在
   <a href="control-structures.declare.html#control-structures.declare.ticks" class="link">tick</a> 被调用时执行。
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.register-tick-function-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">callback</code></dt>

     <dd>

      <p class="para">
       需要注册的函数。
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">args</code></dt>

     <dd>

      <p class="para">
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.register-tick-function-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>true</code></strong>， 或者在失败时返回 <strong><code>false</code></strong>。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.register-tick-function-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-5091">
    <p><strong>示例 #1 <span class="function"><strong>register_tick_function()</strong></span> 示例</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">declare(</span><span style="color: #0000BB">ticks</span><span style="color: #007700">=</span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;using&nbsp;a&nbsp;function&nbsp;as&nbsp;the&nbsp;callback<br /></span><span style="color: #0000BB">register_tick_function</span><span style="color: #007700">(</span><span style="color: #DD0000">'my_function'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;using&nbsp;an&nbsp;object-&gt;method<br /></span><span style="color: #0000BB">$object&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">my_class</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">register_tick_function</span><span style="color: #007700">(array(</span><span style="color: #0000BB">$object</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'my_method'</span><span style="color: #007700">),&nbsp;</span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.register-tick-function-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><a href="control-structures.declare.html" class="link">declare</a></li>
    <li class="member"><span class="function"><a href="function.unregister-tick-function.html" class="function" rel="rdfs-seeAlso">unregister_tick_function()</a> - 注销每个 tick 上需要执行的函数</span></li>
   </ul>
  </p>
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